FI3826307T3 - Method for motion compensated prediction - Google Patents

Method for motion compensated prediction Download PDF

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Publication number
FI3826307T3
FI3826307T3 FIEP21152044.0T FI21152044T FI3826307T3 FI 3826307 T3 FI3826307 T3 FI 3826307T3 FI 21152044 T FI21152044 T FI 21152044T FI 3826307 T3 FI3826307 T3 FI 3826307T3
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Finland
Prior art keywords
fractional
samples
bit depth
sample
interpolation
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FIEP21152044.0T
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Finnish (fi)
Inventor
Frank Jan Bossen
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Ntt Docomo Inc
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Publication of FI3826307T3 publication Critical patent/FI3826307T3/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/184—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being bits, e.g. of the compressed video stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/523—Motion estimation or motion compensation with sub-pixel accuracy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/132—Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/59—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/80—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/80—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
    • H04N19/82—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation involving filtering within a prediction loop

Claims (1)

PatenttivaatimuksetPatent Claims 1. Videon dekoodausmenetelmä liikekompensaatiota varten suoritet- tuna kehyksen välisen ennustuksen alaisuudessa, joka menetelmä käsittää tietoko- neella suoritettavissa olevia vaiheita suoritettuina videodekooderin (301) proses- sorilla (101) implementoimaan: noudetaan referenssinäytteitä referenssikuvan muistista (440), jossa referenssinäytteitä edustetaan eräällä ensimmäisellä bittisyvyydellä; sovelletaan (604, 606) erästä ensimmäistä fraktionaalisen näytteen in- terpolaatiota perustuen referenssinäytteisiin eräässä ensimmäisessä suunnassa generoimaan fraktionaalisten näytteiden eräs ensimmäinen sarja, jossa ensimmäi- sen fraktionaalisen näytteen interpolaatio käsittää konvertoidaan referenssinäyt- teet ensimmäisestä bittisyvyydestä erääseen toiseen bittisyvyyteen; ja sovelletaan (608) erästä toista fraktionaalisen näytteen interpolaatiota fraktionaalisten näytteiden ensimmäiseen sarjaan eräässä toisessa suunnassa ge- neroimaan fraktionaalisten näytteiden eräs toinen sarja, jossa fraktionaalisten näytteiden ensimmäisen sarjan fraktionaaliset näytteet kuvataan toisella bittisyvyydellä, joka on riippumaton referenssinäyttei- den ensimmäisestä bittisyvyydestä, jossa fraktionaalisten näytteiden toisen sarjan fraktionaaliset näytteet kuvataan toisella bittisyvyydellä, jossa toinen bittisyvyys asetetaan samaksi kuin bittien lukumäärä, joka on käytettävissä kuvaamaan fraktionaalisia näytteitä, jossa bidirektionaalinen ennustusnäyte generoidaan keskiarvoista- malla fraktionaalisten näytteiden kaksi toista sarjaa generoituna toisella fraktio- naalisen näytteen interpolaatiolla, kahden toisen sarjan ollessa erilaisia toisistaan, jossa bidirektionaalisen ennustusnäytteen arvoa leikataan tulemaan kuvatuksi referenssinäytteiden ensimmäisellä bittisyvyydellä.1. A video decoding method for motion compensation performed under inter-frame prediction, which method comprises steps that can be performed on a computer, implemented by the processor (101) of the video decoder (301) to implement: reference samples are retrieved from the reference image memory (440), where the reference samples are represented by a certain first bit depth ; applying (604, 606) a first fractional sample interpolation based on the reference samples in a first direction to generate a first series of fractional samples, where the interpolation of the first fractional sample comprises converting the reference samples from the first bit depth to a second bit depth; and applies (608) interpolation of a second fractional sample to the first set of fractional samples in a second direction to generate a second set of fractional samples, where the fractional samples of the first set of fractional samples are described with a second bit depth independent of the first bit depth of the reference samples, where the fractional samples of the second the fractional samples of the series are described with a second bit depth, where the second bit depth is set equal to the number of bits available to describe the fractional samples, where the bidirectional prediction sample is generated by averaging the two second sets of fractional samples generated by the second fractional sample interpolation, the two second sets being different from each other, where the value of the bidirectional prediction sample is trimmed to be described by the first bit depth of the reference samples.
FIEP21152044.0T 2011-06-24 2012-06-22 Method for motion compensated prediction FI3826307T3 (en)

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JP (7) JP5625139B2 (en)
KR (5) KR101748810B1 (en)
CN (5) CN107105263B (en)
AU (6) AU2012272779B2 (en)
BR (1) BR112013032716B1 (en)
CA (5) CA2839704C (en)
DK (1) DK3826307T3 (en)
ES (6) ES2963964T3 (en)
FI (1) FI3826307T3 (en)
HU (4) HUE062673T2 (en)
MX (3) MX2013014726A (en)
PL (6) PL2724540T3 (en)
PT (6) PT3367686T (en)
RU (7) RU2584546C2 (en)
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